Yes, that's exactly how it is set up right now =]
However, that requires the PHP engine to process this tiny thing every time instead of Apache taking care of it as soon as the visitor reaches the server. It does add up once lots of visitors arrive from digg and the sorts.
A .htaccess method would be much appreciated! — Andy Zhang about 8 years ago

Out of curiosity, have you noticed slowdowns in the past because of this? — Doug about 8 years ago